Charles Cullen

Self (archive footage)

Amy Loughren

Self - Nurse, Somerset Medical Center, 2001-2004

Donna Hargreaves

Self - Nurse, Somerset Medical Center, 2000-2014

Dr. Bruce Ruck

Self - Toxicologist

Tim Braun

Self - Commander, Somerset Major Crimes Unit, 2002-2005

Danny Baldwin

Self - Lead Detective, Somerset Major Crimes Unit, 2003-2006

Charles Graeber

Self - Author, 'The Good Nurse'

Dr. Steven Marcus

Self - Medical Director, Poison Control Center, 1983-2016

Pat Medellin

Self - Nurse, St. Luke's Hospital, 2002-2004